Motor stator lead automatic twisting device
By using vertical cylinders and strip-shaped wire clamps in the automatic wire screwing device of the motor stator lead, combined with the limit structure and sealing ring, the problems of insufficient clamping force and difficult design in the prior art are solved, and more stable The thread twisting process and simplified design.
Patent Information
- Application Number
- CN202420663252.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-02
AI Technical Summary
In the existing motor stator lead automatic wire twisting device, the clamping force of the wire twisting finger is insufficient, which affects the wire twisting quality, and the jaw cylinder rotates circumferentially under the action of the rotating shaft, increasing the design difficulty.
A device consisting of vertically arranged cylinders and strip-shaped wire clamps is designed, and clamping and rotation are achieved by sliding and rotating shaft driving of cylinders and piston rods, clamping force is enhanced, and stability is ensured through limiting structures and sealing rings. Simplified in sexuality and design.
It achieves higher clamping force and working stability, reduces the difficulty of air source layout and overall design, and ensures the quality and accuracy of wire twisting.
Smart Images
Figure CN222283026U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of machinery and relates to a wire twisting device, in particular to an automatic wire twisting device for motor stator leads. Background Art
[0002] Motor stator twisting is an important step in the motor manufacturing process, mainly involving the installation and fixation of the stator winding. During the installation of the stator winding, the wires need to be twisted together in a specific way to form the required coil shape and structure. This process usually requires the use of special tools, such as a twisting machine or a jig, to ensure that the wires can fit tightly together and meet the design requirements of the motor.
[0003] Existing wire twisting machines, such as a device for automatic wire twisting and tinning of motor stator lead wires disclosed in the China Patent Library (application number: 202222144096.1), include a frame, on which a loading station, a wire twisting and cutting station, and a tinning station are sequentially arranged along the conveying direction of the motor stator; the frame is provided with a rotating disk that can rotate relative to the frame, the rotating disk is provided with a positioning component for positioning the motor stator and can move to the corresponding station accordingly when the rotating disk rotates, and the frame is provided with a rotating drive component for driving the rotating disk to rotate; the wire twisting and cutting station is provided with a wire twisting mechanism for winding multiple lead wires on the motor stator into a lead wire group and a wire trimming mechanism for trimming the lead wire group. Shearing mechanism; a tinning assembly for tinning the lead group is provided at the tinning station; a wire twisting mounting frame is provided on the frame and located at the wire twisting and cutting station; the wire twisting mechanism includes a wire twisting motor provided on the wire twisting mounting frame and a rotating shaft rotatably provided on the wire twisting mounting frame, a driving wheel is provided on the rotating shaft of the wire twisting motor, a driven wheel is provided at the lower end of the rotating shaft, and the driving wheel and the driven wheel are connected by a synchronous belt transmission; the wire twisting mechanism also includes a wire twisting claw cylinder provided on the upper end of the rotating shaft and a wire twisting finger correspondingly provided on the driving end of the wire twisting claw cylinder and capable of clamping multiple leads at the same time, and when the rotating shaft rotates and the wire twisting finger clamps multiple leads, the multiple leads can be wound into a lead group.
[0004] There are two problems with the above equipment: 1. The wire twisting clamp refers to horizontally clamping the stator lead under the action of the clamping claw cylinder. This method has poor clamping force and affects the quality of wire twisting; 2. The clamping claw cylinder rotates circumferentially under the action of the rotating shaft, which places great requirements on the air source setting and greatly increases the design difficulty. Utility Model Content
[0005] The utility model aims to solve the above problems in the prior art and proposes an automatic wire twisting device for motor stator leads which has stable operation and low design difficulty.
[0006] The purpose of the utility model can be achieved through the following technical solutions: an automatic wire twisting device for motor stator lead wires, comprising a frame, a vertically arranged cylinder and a strip-shaped wire twisting clamp arranged above the cylinder, two wire twisting clamps are symmetrically arranged, the cylinder comprises a cylinder body, a piston and a piston rod connected to the piston, characterized in that both ends of the cylinder body are open, the lower end of the piston rod extends out of the cylinder body and is connected to the frame, and the cylinder body can slide up and down relative to the piston; the inner walls at both ends of the cylinder body are sealed with the side walls of the piston rod, two air cavities are formed between the cylinder body, the piston and the piston rod, the two air cavities are distributed on the upper and lower sides of the piston, and The cylinder body is provided with two air holes which respectively connect the two air cavities; the piston rod is hollow, and a rotating shaft is coaxially arranged inside the piston rod, the lower end of the rotating shaft is connected to a power source for driving the rotating shaft to rotate, and the upper end of the rotating shaft extends out of the cylinder body; the lower ends of the two wire clamps are hinged to the rotating shaft through a horizontally arranged shaft body 1, and the axial direction of the shaft body 1 is perpendicular to the distribution direction of the two wire clamps; a support is axially fixed to the upper end of the cylinder body, and the support can rotate around the central axis of the rotating shaft; a connecting rod is arranged between the two wire clamps and the supporting member, and both ends of the connecting rod are hinged to the middle part of the wire clamp and the supporting member through a shaft body 2, and the axes of the shaft body 1 and the shaft body 2 are arranged in parallel.
[0007] The use process is as follows: the lower air cavity is inflated to lift the cylinder body, so that the two wire clamps swing inward to clamp the stator lead, and then the power source works and drives the wire clamps to rotate through the rotating shaft to perform the wire twisting operation; after the wire twisting is completed, the upper air cavity is inflated to make the cylinder body descend, and the two wire clamps swing outward to loosen the stator lead.
[0008] The two twisting clamps clamp the stator lead wires by swinging the connecting rod. The clamping force of this method is significantly greater than the horizontal clamping in the prior art, so that the stator lead wires are firmly twisted together and the operation is relatively stable.
[0009] Secondly, the cylinder body of the present application can only move axially and cannot rotate circumferentially, which can effectively reduce the difficulty of gas source arrangement and reduce the difficulty of overall device design.
[0010] In the above-mentioned motor stator lead automatic twisting device, the device also includes a limiting structure for limiting the downward movement distance of the cylinder body, so that the downward movement distance of the cylinder body is controlled within a reasonable range, the cylinder body movement stroke is reduced, and the working efficiency of the device is improved.
[0011] In the above-mentioned motor stator lead automatic twisting device, the limiting structure includes a ring-shaped limiting seat formed on the outer wall of the lower end of the piston rod, and the cylinder body can be pressed on the top wall of the limiting seat when moving downward, which has the advantages of simple structure and easy installation.
[0012] As another solution, in the above-mentioned automatic wire twisting device for motor stator leads, the frame includes a horizontally arranged crossbeam, the limiting structure is the above-mentioned crossbeam, and the cylinder body can be pressed on the crossbeam when moving downward.
[0013] In the above-mentioned motor stator lead automatic wire twisting device, the support member is cylindrical and is sleeved outside the upper end of the cylinder body. The support member is axially fixed to the cylinder body through a bearing and rotates circumferentially, so that the support member rotates stably to ensure the quality and accuracy of the wire twisting.
[0014] In the above-mentioned motor stator lead automatic wire twisting device, the axial cross-section of the support member is roughly L-shaped, the lower end of the support member is connected to the cylinder body through the above-mentioned bearing, the upper end of the support member is sleeved on the rotating shaft and a seal is formed between the two through a sealing ring to prevent dust and other impurities from entering the piston rod and affecting the rotation of the rotating shaft.
[0015] In the above-mentioned automatic wire twisting device for motor stator leads, the upper and lower ends of the cylinder body are sealed with the outer wall of the piston rod through the upper sealing ring and the lower sealing ring respectively, so that the two air cavities are stably formed to ensure stable operation of the wire twisting device.
[0016] In the above-mentioned automatic wire twisting device for the stator lead wire of the motor, the upper sealing ring is made of elastic material, the outer wall of the upper sealing ring contacts and seals with the inner wall of the cylinder body, and the two ends of the upper sealing ring are respectively pressed against the inner wall of the support and the top surface of the piston rod to form a seal. Since the upper sealing ring is elastic, the two ends of the upper sealing ring are always pressed against the inner wall of the support and the top surface of the piston rod to form a seal when the cylinder body slides axially, and the upper sealing ring and the sealing ring cooperate to form two seals in the axial direction, effectively isolating dust and other impurities outside the cylinder, ensuring the stable operation of the wire twisting device.
[0017] In the above-mentioned automatic wire twisting device for the motor stator lead, the power source is a power head installed on the frame. The power head is connected to the lower end of the piston rod and can drive the piston rod to slide up and down. The power head also includes a main shaft for connecting to the lower end of the rotating shaft. That is, at this time, the entire wire twisting device is supported on the power head and driven by the power head to rise and fall as a whole, so that the wire twisting clamp can twist the wire while descending. This can effectively avoid the situation in the prior art where the stator moves upward and causes the lead to break, so as to further enhance the working stability of the wire twisting device.
[0018] In the above-mentioned automatic wire twisting device for the stator lead of the motor, a wire twisting opening is formed between the upper ends of the two wire twisting clamps; two wire pieces are arranged above the wire twisting clamps and are distributed along an axial direction of the shaft body. The wire pieces are arranged horizontally, and the two wire pieces are arranged up and down, and the adjacent ends of the two wire pieces are vertically penetrated by V-shaped grooves; the frame is also provided with a driving member for driving the two wire pieces to slide along an axial direction of the shaft body to approach or move away from each other, and the two wire pieces are close to each other so that the two V-shaped grooves partially overlap to form a wire opening that is arranged opposite to the wire twisting opening. When in use, the two wire pieces are close to each other to form a wire opening to force the stator lead position to be corrected, so that the stator lead is accurately in the twisting position, ensuring that the twisting process is smooth and stable.
[0019] In the above-mentioned motor stator lead wire automatic twisting device, the driving member is a pneumatic finger, and the pneumatic finger is arranged on one side of the cylinder body, one end of the wire sheet extends downward to form a connecting strip, and the two connecting strips are respectively fixed to the two fingers of the pneumatic finger. The above-mentioned design is not only simple in structure, but also can reduce space occupation.
[0020] Compared with the prior art, the motor stator lead automatic twisting device has the following advantages:
[0021] 1. The two twisting clamps clamp the stator lead wires by swinging the connecting rod. The clamping force of this method is significantly greater than the horizontal clamping in the prior art, so that the stator lead wires are firmly twisted together and the operation is relatively stable.
[0022] 2. The cylinder body of the present application can only move axially and cannot rotate circumferentially, which can effectively reduce the difficulty of gas source arrangement and the difficulty of overall device design.
[0023] 3. Since the upper sealing ring is elastic, the two ends of the upper sealing ring are always pressed against the inner wall of the support and the top surface of the piston rod to form a seal when the cylinder body slides axially. The upper sealing ring and the sealing ring cooperate to form two seals in the axial direction, effectively isolating dust and other impurities outside the cylinder to ensure stable operation of the wire twisting device. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a three-dimensional schematic diagram of an automatic wire twisting device for motor stator leads.
[0025] Figure 2 It is a three-dimensional schematic diagram of the connection between the cylinder, the support and the wire clamp.
[0026] Figure 3 It is a cross-sectional schematic diagram of the connection between the cylinder, the support and the wire clamp.
[0027] Figure 4 It is a connection diagram between the conductor piece and the driving component.
[0028] In the figure, 1, frame; 2, wire clamp; 3, cylinder body; 3a, air hole; 4, piston; 5, piston rod; 5a, limit seat; 6, air cavity; 7, rotating shaft; 8, power head; 9, shaft body 1; 10, support member; 11, connecting rod; 12, shaft body 2; 13, bearing; 14, sealing ring 1; 15, upper sealing ring; 16, lower sealing ring; 17, wire sheet; 17a, V-shaped groove; 17b, connecting strip; 18, driving member; 19, guide block. DETAILED DESCRIPTION
[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Embodiment 1
[0030] like Figure 1 and Figure 2 As shown, the motor stator lead wire automatic twisting device comprises a frame 1, a vertically arranged cylinder and a strip-shaped twisting clamp 2 arranged above the cylinder. There are two twisting clamps 2 and they are symmetrically arranged, and a twisting opening is formed between the upper ends of the two twisting clamps 2.
[0031] Specifically,
[0032] like Figures 1 to 3 As shown, the cylinder includes a cylinder body 3, a piston 4 arranged in the cylinder body 3, and a piston rod 5 connected to the piston 4. Among them, both ends of the cylinder body 3 are open, the lower end of the piston rod 5 extends out of the cylinder body 3 and is connected to the frame 1, and the cylinder body 3 can slide up and down relative to the piston 4. The shape and size of the inner side walls at both ends of the cylinder body 3 match the outer wall of the piston rod 5, and the inner side walls at both ends of the cylinder body 3 form a seal with the outer wall of the piston rod 5. At this time, two air chambers 6 are formed between the cylinder body 3, the piston 4 and the piston rod 5. The two air chambers 6 are distributed on the upper and lower sides of the piston 4, and the cylinder body 3 is provided with two air holes 3a respectively connecting the two air chambers 6. The piston rod 5 is hollow, and a rotating shaft 7 is coaxially arranged in the piston rod 5. The lower end of the rotating shaft 7 is connected to a power source for driving the rotating shaft 7 to rotate, and the upper end of the rotating shaft 7 extends out of the cylinder body 3. The lower ends of the two twisting clamps 2 are hinged to the rotating shaft 7 through a horizontally arranged shaft body 9, and the axial direction of the shaft body 9 is perpendicular to the distribution direction of the two twisting clamps 2. A support member 10 is axially fixed to the upper end of the cylinder body 3, and the support member 10 can rotate around the central axis of the rotating shaft 7. A connecting rod 11 is provided between the two twisting clamps 2 and the support member 10, and both ends of the connecting rod 11 are respectively hinged to the middle of the twisting clamp 2 and the support member 10 through the second shaft body 12, and the axes of the first shaft body 9 and the second shaft body 12 are arranged in parallel. It is preferred that the shape and size of the outer wall of the rotating shaft 7 match the inner wall of the piston rod 5, so that the rotating shaft 7 can run more smoothly.
[0033] The two twist clamps 2 clamp the stator lead wires by swinging the connecting rod 11. The clamping force of this method is significantly greater than the horizontal clamping in the prior art, so that the stator lead wires are firmly twisted together, and the operation is relatively stable.
[0034] Secondly, the cylinder body 3 of the present application can only move axially and cannot rotate circumferentially, which can effectively reduce the difficulty of gas source arrangement and the difficulty of overall device design.
[0035] Further explanation, the device also includes a limit structure for limiting the downward movement distance of the cylinder body 3, so that the downward movement distance of the cylinder body 3 is controlled within a reasonable range, the movement stroke of the cylinder body 3 is reduced, and the working efficiency of the device is improved.
[0036] In this embodiment,
[0037] The limiting structure includes an annular limiting seat 5a integrally formed on the outer wall of the lower end of the piston rod 5, and the cylinder body 3 can be pressed on the top wall of the limiting seat 5a when moving downward, which has the advantages of simple structure and easy installation.
[0038] like Figure 2 and Figure 3 As shown, the support member 10 is cylindrical and sleeved on the outer side of the upper end of the cylinder body 3, and the support member 10 is axially fixed and circumferentially rotated with the cylinder body 3 through the bearing 13, so that the support member 10 can rotate stably to ensure the quality and accuracy of the wire twisting. Further explanation, the axial cross-section of the support member 10 is roughly L-shaped, the lower end of the support member 10 is connected to the cylinder body 3 through the above-mentioned bearing 13, the upper end of the support member 10 is sleeved on the rotating shaft 7 and a seal is formed between the two through a sealing ring 14 to prevent dust and other impurities from entering the piston rod 5 and affecting the rotation of the rotating shaft 7. Among them, the installation method of the sealing ring 14 is as follows: an annular groove 1 is opened on the inner wall of the upper end of the support member 10, and the sealing ring 14 is arranged in the annular groove 1, and the inner side wall of the sealing ring 14 is in contact and sealed with the outer wall of the rotating shaft 7. Naturally, the support member 10 can also be a plate-like structure, and the support member 10 is provided with a center hole for the upper end of the rotating shaft 7 to pass through.
[0039] The upper and lower ends of the cylinder body 3 are sealed with the outer wall of the piston rod 5 through the upper sealing ring 15 and the lower sealing ring 16 respectively, so that the two air chambers 6 are stably formed, ensuring the stable operation of the wire twisting device.
[0040] in,
[0041] The lower sealing ring 16 is installed as follows: a lower annular groove for accommodating the lower sealing ring 16 is provided on the inner wall of the lower end of the cylinder body 3 , and the inner side wall of the lower sealing ring 16 contacts and seals with the outer wall of the piston rod 5 .
[0042] like Figure 3 As shown, the installation method of the upper sealing ring 15 is as follows: the upper sealing ring 15 is made of elastic material, and the upper sealing ring 15 is usually made of rubber material. The outer wall of the upper sealing ring 15 contacts and seals with the inner wall of the cylinder body 3, and the two ends of the upper sealing ring 15 are respectively pressed against the inner wall of the support member 10 and the top surface of the piston rod 5 to form a seal. Since the upper sealing ring 15 is elastic, when the cylinder body 3 slides axially, the two ends of the upper sealing ring 15 are always pressed against the inner wall of the support member 10 and the top surface of the piston rod 5 to form a seal, and the upper sealing ring 15 and the sealing ring 14 cooperate to form two seals in the axial direction, effectively isolating dust and other impurities outside the cylinder, ensuring the stable operation of the wire twisting device.
[0043] The specific structure of the power source is as follows: the power source is a power head 8 installed on the frame 1, the power head 8 is connected to the lower end of the piston rod 5 and can drive the piston rod 5 to slide up and down, and the power head 8 also includes a main shaft for connecting the lower end of the rotating shaft 7, that is, at this time, the entire wire twisting device is supported on the power head 8, and the power head 8 drives the entire lifting and lowering, so that the wire twisting clamp 2 can twist the wire while descending, so as to effectively avoid the situation in the prior art where the stator moves up and causes the lead wire to break, so as to further enhance the working stability of the wire twisting device. Preferably, the power head 8 is a servo power head 8, which is a prior art product and will not be introduced in detail here.
[0044] Of course, it is also possible that the power source is a servo motor.
[0045] like Figure 1 and Figure 4 As shown, two wire pieces 17 are arranged axially along the shaft body 9 above the wire twisting clamp 2. The wire pieces 17 are arranged horizontally, and the two wire pieces 17 are arranged up and down. The adjacent ends of the two wire pieces 17 are vertically penetrated by V-shaped grooves 17a. The frame 1 is also provided with a driving member 18 for driving the two wire pieces 17 to slide axially along the shaft body 9 to approach or move away from each other, and the two wire pieces 17 approach each other so that the two V-shaped grooves 17a partially overlap to form a wire opening that is arranged opposite to the wire twisting opening. When in use, the two wire pieces 17 approach each other to form a wire opening to force the stator lead position to be corrected, so that the stator lead is accurately in the wire twisting position, ensuring that the wire twisting process is smooth and stable.
[0046] The driving member 18 is a pneumatic finger, and the pneumatic finger is arranged on one side of the cylinder body 3. One end of the wire sheet 17 extends downward to form a connecting strip 17b, and the two connecting strips 17b are respectively connected to the two fingers of the pneumatic finger. The above design is not only simple in structure, but also can reduce space occupation. In this embodiment, the pneumatic finger is fixed to the frame 1 through a bracket.
[0047] In the actual product, a guide mechanism is provided between the cylinder body 3 and the piston rod 5 to keep the cylinder body 3 in axial sliding. Specifically, the guide mechanism includes a vertical strip groove provided on the outer wall of the cylinder body 3, and the lower end of the strip groove is open, and a guide block 19 matching the strip groove is fixed to the lower end of the piston rod 5, and the upper end of the guide block 19 is inserted into the strip groove.
[0048] The use process of the tightening device is as follows: the power head 8 drives the wire twisting clamp 2 to move up to the wire twisting position, and the lower air chamber 6 is inflated to lift the cylinder body 3, so that the two wire twisting clamps 2 swing inward to clamp the stator lead, and then the power head 8 works to drive the wire twisting clamp 2 to rotate and move downward at the same time to perform the wire twisting operation; after the wire twisting is completed, the upper air chamber 6 is inflated to make the cylinder body 3 descend to contact with the limit seat 5a, and the two wire twisting clamps 2 swing outward to loosen the stator lead, waiting for the next wire twisting. Embodiment 2
[0049] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the frame 1 includes a horizontally arranged crossbeam, the limiting structure is the crossbeam, and the cylinder body 3 can be pressed on the crossbeam when moving downward. Embodiment 3
[0050] The structure and principle of the third embodiment are basically the same as those of the first embodiment, except that the driving member 18 is two cylinders connected to the ends of the two wire sheets 17 respectively. Embodiment 4
[0051] The structure and principle of the fourth embodiment are basically the same as those of the first embodiment, except that the guide mechanism includes a guide sleeve fixed on the outer wall of the cylinder body 3 and a guide rod vertically fixed on the lower end of the piston rod 5, and the guide sleeve is sleeved on the guide rod.
[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. An automatic wire twisting device for a motor stator lead wire, comprising a frame (1), a vertically arranged cylinder, and a strip-shaped wire twisting clamp (2) arranged above the cylinder, wherein the wire twisting clamps (2) are two and symmetrically arranged, and the cylinder comprises a cylinder body (3), a piston (4), and a piston rod (5) connected to the piston (4), characterized in that: Both ends of the cylinder body (3) are open, the lower end of the piston rod (5) extends out of the cylinder body (3) and is connected to the frame (1), and the cylinder body (3) can slide up and down relative to the piston (4); the inner walls at both ends of the cylinder body (3) and the side walls of the piston rod (5) are sealed, and two air chambers (6) are formed between the cylinder body (3), the piston (4) and the piston rod (5), and the two air chambers (6) are distributed on the upper and lower sides of the piston (4), and the cylinder body (3) is provided with two air holes (3a) respectively connecting the two air chambers (6); the piston rod (5) is hollow, and a rotating shaft (7) is coaxially arranged inside the piston rod (5), and the lower end of the rotating shaft (7) is connected to a shaft for driving the rotating shaft (7) to rotate. The cylinder body (3) is a power source, and the upper end of the rotating shaft (7) extends out of the cylinder body (3); the lower ends of the two wire twisting clamps (2) are hinged to the rotating shaft (7) through a horizontally arranged shaft body (9), and the axial direction of the shaft body (9) is perpendicular to the distribution direction of the two wire twisting clamps (2); a support member (10) is axially fixed to the upper end of the cylinder body (3), and the support member (10) can rotate around the central axis of the rotating shaft (7); a connecting rod (11) is provided between the two wire twisting clamps (2) and the support member (10), and both ends of the connecting rod (11) are hinged to the middle part of the wire twisting clamp (2) and the support member (10) through a shaft body (12), and the axes of the shaft body (9) and the shaft body (12) are arranged in parallel.
2. The motor stator lead wire automatic twisting device according to claim 1, characterized in that: The device also includes a limiting structure for limiting the downward movement distance of the cylinder body (3).
3. The motor stator lead wire automatic twisting device according to claim 2, characterized in that: The limiting structure comprises a limiting seat (5a) which is formed on the outer wall of the lower end of the piston rod (5) and is in an annular shape, and the cylinder body (3) can be pressed on the top wall of the limiting seat (5a) when the cylinder body (3) moves downward.
4. The motor stator lead wire automatic twisting device according to claim 1, characterized in that: The support member (10) is cylindrical and is sleeved outside the upper end of the cylinder body (3). The support member (10) is axially fixed to the cylinder body (3) through a bearing (13) and rotates circumferentially.
5. The motor stator lead wire automatic twisting device according to claim 4, characterized in that: The axial cross-section of the support member (10) is roughly L-shaped. The lower end of the support member (10) is connected to the cylinder body (3) via the bearing (13). The upper end of the support member (10) is sleeved on the rotating shaft (7) and a seal is formed between the two via a sealing ring (14).
6. The motor stator lead wire automatic twisting device according to claim 5, characterized in that: The upper and lower ends of the cylinder body (3) are sealed with the outer wall of the piston rod (5) through an upper sealing ring (15) and a lower sealing ring (16) respectively; the upper sealing ring (15) is made of elastic material, the outer wall of the upper sealing ring (15) is in contact with the inner wall of the cylinder body (3) to form a seal, and the two ends of the upper sealing ring (15) are respectively pressed against the inner wall of the support member (10) and the top surface of the piston rod (5) to form a seal.
7. The motor stator lead wire automatic twisting device according to claim 3, characterized in that: The power source is a power head (8) mounted on the frame (1). The power head (8) is connected to the lower end of the piston rod (5) and can drive the piston rod (5) to slide up and down. The power head (8) also includes a main shaft for connecting to the lower end of the rotating shaft (7).
8. The motor stator lead wire automatic twisting device according to claim 1, characterized in that: A wire twisting opening is formed between the upper ends of the two wire twisting clamps (2); two wire pieces (17) are arranged above the wire twisting clamps (2) and are distributed along the axial direction of the shaft body (9); the wire pieces (17) are arranged horizontally, the two wire pieces (17) are arranged up and down, and the adjacent ends of the two wire pieces (17) are vertically penetrated by V-shaped grooves (17a); the frame (1) is also provided with a driving member (18) for driving the two wire pieces (17) to slide along the axial direction of the shaft body (9) to approach or move away from each other, and the two wire pieces (17) are close to each other so that the two V-shaped grooves (17a) partially overlap to form a wire twisting opening arranged directly opposite the wire twisting opening.
9. The motor stator lead wire automatic twisting device according to claim 8, characterized in that: The driving member (18) is a pneumatic finger, and the pneumatic finger is arranged on one side of the cylinder body (3), one end of the wire sheet (17) extends downward to form a connecting strip (17b), and the two connecting strips (17b) are respectively fixedly connected to two fingers of the pneumatic finger.
10. The motor stator lead wire automatic twisting device according to claim 1, characterized in that: A guide mechanism is also provided between the cylinder body (3) and the piston rod (5) for enabling the cylinder body (3) to maintain axial sliding.